Chair arm

ABSTRACT

A chair arm in the invention includes an arm body having a base provided with two recesses in two opposite sidewalls of the base, a mounting seat having a stop plate provided with a raised face at one sidewall of the stop plate and corresponding to one of the recesses, and a cover. The raised face can be fitted into one of the recesses and firmly screwed with the base by screw members. After the cover is closed on the other sidewall of the base, a left or right chair arm of the invention is assembled together and can be fixed at a left or right side of a chair seat by having the other side of the mounting seat fastened at the chair seat. Therefore, only one mold is adapted for the left and right chair arms, thereby reducing the costs in producing two molds and providing easy assemblage.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] This invention relates to a chair arm, particularly to one having a base provided with two recesses respectively disposed in two opposite sidewalls of the base for being selectively assembled with one side of a mounting seat to form a left or right chair arm for being fixed at a left or right side of a chair seat by having the other side of the mounting seat fastened at the chair seat so that only one mold of the chair arm is adapted for left and right chair arms, thereby reducing the costs in producing two molds and providing easy assemblage.

[0003] 2. Description of the Prior Art

[0004] Generally speaking, a known conventional chair arm 10 integrally formed, as shown in FIG. 1, has a support 11 disposed at a lower portion thereof and provided with a plurality of through holes for being firmly screwed on one sidewall of a chair back by a plurality of screw members 12, and two mounting plates 13 disposed on a bottom thereof and also provided with a plurality of through holes for being firmly screwed at a bottom of one side of a chair seat by a plurality of screw members 12. In such way, left and right conventional chair arms 10 are capable of being respectively fixed on both sides of a chair. However, the left and right conventional chair arms 10 are integrally formed in two opposite configurations so that it is necessary to produce two molds for the left and right chair arms 10, thus increasing the costs in producing molds.

SUMMARY OF THE INVENTION

[0005] The main purpose of the invention is to offer a chair arm adapted to be fixed at a right or left side of a chair seat so that only one mold of the chair arm is adapted for left and right chair arms, thereby reducing the costs in producing two molds and providing easy assemblage.

[0006] The main feature of the invention is to provide a chair arm mainly including:

[0007] an arm body having a base located at a lower portion thereof and provided with two polygonal recesses respectively disposed in two opposite sidewalls of the base, a plurality of through holes disposed in an interior of the base and extending through the base in communication with the two opposite polygonal recesses, and a plurality of screw members capable of extending through the plurality of through holes;

[0008] a mounting seat capable of being combined with one of the two sidewalls of the base of the arm body and having a stop plate disposed at one side thereof and provided with a polygonal raised face disposed at one sidewall of the stop plate and corresponding to one of the two opposite polygonal recesses of the base of the arm body; and,

[0009] a cover capable of being closed on the other one of the two sidewalls of the base of the arm body.

BRIEF DESCRIPTION OF DRAWINGS

[0010] This invention will be better understood by referring to the accompanying drawings, wherein:

[0011]FIG. 1 is a perspective view of a known conventional chair arm;

[0012]FIG. 2 is an exploded perspective view of a chair arm in the present invention;

[0013]FIG. 3 is a perspective view of the chair arm in the present invention, showing a mounting seat assembled with one sidewall of a base of an arm body;

[0014]FIG. 4 is a cross-sectional view of the chair arm in the present invention, showing the mounting seat assembled with one sidewall of the base of the arm body; and,

[0015]FIG. 5 is a cross-sectional view of the chair arm in the present invention, showing the mounting seat assembled with the other sidewall of the base of the arm body.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0016] A preferred embodiment of a chair arm in the present invention, as shown in FIGS. 2, 3 and 4, mainly includes an arm body 2, a mounting seat 3, and a cover 4.

[0017] The arm body 2 has a base 20 located at a lower portion thereof and provided with two polygonal recesses 21 respectively disposed in two opposite sidewalls of the base 20, a plurality of through holes 23 and an insert hole 22 both disposed in an interior of the base 20 and extending through the base 20 in communication with the two opposite polygonal recesses 21, and a plurality of screw members 24 capable of extending through the plurality of through holes 23.

[0018] The mounting seat 3 capable of being screwed with one of the two sidewalls of the base 20 of the arm body 2 has a stop plate 30 disposed at one side thereof and provided with a polygonal raised face 31 protruded on an outer sidewall of the stop plate 30 and corresponding to one of the two opposite polygonal recesses 21 of the base 20 of the arm body 2. The polygonal raised face 31 is provided with a plurality of screw holes 32.

[0019] The cover 4 capable of being closed on the other one of the two sidewalls of the base 20 of the arm body 2 has a post 40 disposed therein and provided with an insert rod 41 whose diameter is a little larger than that of the insert hole 22 of the base 20 of the arm body 2.

[0020] In assembling, when a left chair arm of the present invention is to be assembled, referring to FIGS. 2, 3 and 4, firstly fit the polygonal raised face 31 of the mounting seat 3 into the polygonal recess 21 disposed in a right sidewall of the base 20 of the arm body 2 with the polygonal raised face 31 correspondingly fitted with the polygonal recesses 21 of the base 20 of the arm body 2 so that the mounting seat 3 is capable of being limited on the right sidewall of the base 20 of the arm body 2. Secondly, respectively extend the plurality of screw members 24 through the plurality of through holes 23 of the base 20 of the arm body 2 to be firmly screwed in the plurality of screw holes 32 of the polygonal raised face 31 of the mounting seat 3. Finally, close the cover 4 on a left sidewall of the base 20 of the arm body 2 by having the insert rod 41 of the cover 4 tightly inserted into the insert hole 22 of the base 20 of the arm body 2. Since the diameter of the insert rod 41 of the cover 4 is a little larger than that of the insert hole 22 of the base 20 of the arm body 2, the insert rod 41 of the cover 4 and the insert hole 22 of the base 20 of the arm body 2 can be tightly fitted together so as to make the cover 4 firmly closed on the left sidewall of the base 20 of the arm body 2 without worry of coming loose, by which the left chair arm of the present invention is assembled all together and the assembled left chair arm is capable of being fixed at a left side of a chair seat by having the other side of the mounting seat 3 fastened at the left side of the chair seat.

[0021] When a right chair arm of the present invention is to be assembled, referring to FIG. 5, it is only necessary to exchange the positions of the mounting seat 3 and the cover 4 so as to be contrary to those as combined in the left chair arm. Firstly, fit the polygonal raised face 31 of the mounting seat 3 into the polygonal recess 21 disposed in the left sidewall of the base 20 of the arm body 2. Secondly, firmly screw the polygonal raised face 31 of the mounting seat 3 in left polygonal recess 21 of the base 20 of the arm body 2 by the plurality of screw members 24. Finally, close the cover 4 on the right sidewall of the base 20 of the arm body 2, by which the right chair arm of the present invention is assembled all together and the assembled right chair arm is capable of being fixed at a right side of the chair seat by having the other side of the mounting seat 3 fastened at the right side of the chair seat. The chair arm of the present invention is designed only with one single configuration, but is capable of exchanging its left and right assembling methods for being firmly fixed at the left or right side of the chair seat. Therefore, only one mold of the chair arm is adapted for the left and right chair arms, thereby reducing the costs in producing two molds and providing easy assemblage.

[0022] While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention. 

What is claimed is:
 1. A chair arm comprising: an arm body having a base located at a lower portion thereof and provided with two polygonal recesses respectively disposed in two opposite sidewalls of said base, a plurality of through holes disposed in an interior of said base and extending through said base in communication with said two opposite recesses, and a plurality of screw members capable of extending through said plurality of through holes; a mounting seat capable of being combined with one of said two sidewalls of said base of said arm body and having a stop plate disposed at one side thereof and provided with a polygonal raised face disposed at one sidewall of said stop plate and corresponding to one of said two opposite recesses of said base of said arm body; and, a cover capable of being closed on the other one of said two sidewalls of said base of said arm body.
 2. The chair arm as claimed in claim 1, wherein an insert hole is disposed in an interior of said base of said arm body and extending through said base in communication with said two opposite recesses, and said cover has a post disposed therein and provided with an insert rod whose diameter is a little larger than that of said insert hole of said base of said arm body.
 3. The chair arm as claimed in claim 1, wherein said polygonal raised face of said mounting seat is provided with a plurality of screw holes. 